Improvement in roses for door-knobs



" E. A. cRAw.

Improvement in-Roses for Door Knobs.

N0.'I24,936, I PatentedMarch26,1872.

'. )M/l'nesses Y leyeevtmf AM. PHOT0- LITHDsRAFIIIC co. NX' axioms: Man-m,

a full, clear, and eXact description of the con- .pass into the door and serve as braces and @rrion.

EDWIN A. GRA'W, or WATERBURY, CONNECTICUT.

lMPRQVEMENT IN RQSES FGR BGOR=KNQ BS.

Specification forming part of Letters Patent No. 124,936, dated March 26,1872.

To all whom it may concern: 1

Be it known that I, EDWIN A. CRAW, of Waterbury, in the county of New Haven and State of Connecticut, have invented a new and valuable Improvement in Locksfor Doors, 850. andI do hereby declare that the following is struction and operation of the same, reference being had to the annexed drawing making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawing is a representation of a central vertical longitudinal section of my invention. Fig. 2 is an interior view of the same.

This invention has relation to door-locks; and the novelty consists in the construction of the knob-rose with tubular projections that supports to said rose; and also in extending the holding-screws through said tubular projections into the lock-case.

Referri n g to the accompanying drawing illustrating this invention, A represents a door, mortised in the edge, to receive the lock-caseB. O designates a reciprocating knob-bolthavin g a beveled head, d, and a pair of jaws or horse shoe legs, d. At E are posts, secured to the case, and provided with open disks 6, through which the bolt plays. The bolt is encircled by two spiral springs, F G, the former between the posts E and the head 01 and the latter between the posts and the horseshoe. The object of the spring G is to draw back the bolt when drawn out to reverse the position of the beveled head. The bolt may be drawn out sufficiently for the purpose of changing the bolt by means of apair of pinchers or other tool, and readily adapted to work automatically with a right or left-hand door. H designates the knobshaft, which passes through the lockcase and through the collar it, having the arms h, which actuate the bolt. I represents the knobs, and J the knob-roses. The latter are secured by means of screws 6, which enter the lock-case, filling the holes 2" therein, and serving the purpose of holding both the roses and the case in place. Around the screw-holes of the roses flanges 7c are formed and made to fit sockets cut in the door, thus providing means for keeping the roses in place when the screws are removed and the case taken out for any purpose.

I claim as my invention- 1.. The external knob-roses J, secured in place by means of the screws t passing through said roses and the woodwork into the lockcase B, substantially as specified.

2. Theimproved knob-roseshavingthe cylindrical flanges 7c projecting inward from around the screw-holes into the wood and encircling the screws, substantially as and for the purpose specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

EDWVIN A. GRAW.

Witnesses:

FRANKLIN L. WnL'roN, FRANK D. Wn roN. 

